Over the weekend, in the process of getting over a pretty nasty head cold, I experienced some temporary tinnitus: As I lay in bed, I could distinctly hear ringing in my left ear. Since it somewhat impeded my going to sleep, and since I'm curious about auditory matters, I took the time to examine and reflect on the phenomenon.
It turns out that my tinnitus (at least that temporary bout; it's gone as I write this) sounds like a hazy pitch somewhere around F# and G (both seemed to fit within it), accompanied by a more defined, though quick and irregular, 'beeping' at the just-lower E♭. (This last honestly sounded just like a telegraph; if I knew Morse code better, I might have got direct messages from my auditory cortex!)
Interestingly, the American Association of Audiology found that over a 195-patient sample, the average pitch was 4968 Hz, which sounds to me about the same as the E♭ I heard last night. (At A/440 concert pitch and equal temperament, that E♭ should technically be at 4978Hz. However, that discrepancy is probably outside the resolution of my pitch accuracy.)
It was way cool having temporary tinnitus, but I'll go to sleep quicker tonight.
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